working with parallel port

[lava]

Hello

I am intersted in working with the parallel port (LPT1 if I understand correctly) - I want to be able to generate an electric stimulus in the LPT port from the vi: what is the way to do it???

should I use the Out Port.vi to do so???   

Lava

[Wayne.C]

lava,

You should be able to use the VISA vi's to control the parallel port.

[lava]

Hello centerbolt

can you please be a little more specific- lets say I want to change the data in one of the pins from '0' to '1', and the addresses of LPT1 in my computer are 0368-037F, can you send me a short block diagram to illustrate your solution???

thanks, Lavi

[lava]

sorry, the addresses are 0378-037F

[lava]

sorry, the addresses are 0378-037F

[Wayne.C]

lava,

With VISA you just need to use LPT1.  The other part of parallel port communication is that you write to the port, not to individual pins.  This example should get you going.

http://zone.ni.com/devzone/cda/epd/p/id/4213

[lava]

Is this option ok also??

[Wayne.C]

Out_Port.vi also works.  I personally do everything with VISA.  It makes it easier to write programs that will run on other pc's with different LPT port settings.  With VISA you don't need to know the physcal address the port is set to.  That can be a real headache if your programs have to run on a lot of different pc's.